MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31f21e3ba94e074d03b416decbbb5a69994ccd8137b3e361acf21e298c00befa. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Formbook


Vendor detections: 14


Intelligence 14 IOCs YARA 4 File information Comments
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SHA256 hash: 31f21e3ba94e074d03b416decbbb5a69994ccd8137b3e361acf21e298c00befa
SHA3-384 hash: aea3e7d30df73d5b5150ec07492bc48f0775aea270560b015af50a693b557a3efa06f4539525a3b55c2ff6cb6e77229a
SHA1 hash: 7e3973363f560d9b9afff330f8085ac906a40f73
MD5 hash: d7b6de9eee0391cdd094952bf72dd483
humanhash: football-eighteen-november-october
File name:Original Invoice_12_1421-07-2022085 Document.exe
Download: download sample
Signature Formbook
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File size:8'704 bytes
First seen:2022-07-21 12:58:54 UTC
Last seen:2022-07-21 13:36:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 192:LQxDxD/EBIQFCPDJCeePYiqV++De5vcm3:8/DcBjYJCdQhE5vcm
TLSH T13D02D922B7FC8B75D8B90B715CB6A742067AB7569913DF7E29C0000E5D82688CBE2771
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
318
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
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ID:
1
File name:
Original Invoice_12_1421-07-2022085 Document.rar
Verdict:
Malicious activity
Analysis date:
2022-07-21 12:30:47 UTC
Tags:
opendir loader formbook trojan stealer
Link:
https://app.any.run/tasks/1f242b94-ef96-42fe-8aa4-6c54c290a94f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/293182/
Detection(s):
SecuriteInfo.com.IL.Trojan.MSILZilla.22111.10979.1516.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Sending an HTTP GET request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Sending a custom TCP request
DNS request
Searching for synchronization primitives
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62d94de90e298a94f3e84beb/reports/0b96169c-68af-4006-bb83-53be59106f86/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3004a044-109c-494c-8ae5-1f01c802f071
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1038615
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 671105 Sample: Original Invoice_12_1421-07... Startdate: 21/07/2022 Architecture: WINDOWS Score: 100 32 www.gogadat.beauty 2->32 50 Snort IDS alert for network traffic 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 Antivirus detection for URL or domain 2->54 56 10 other signatures 2->56 11 Original Invoice_12_1421-07-2022085 Document.exe 15 3 2->11         started        signatures3 process4 dnsIp5 40 102.37.220.234, 49722, 80 MICROSOFT-CORP-MSN-AS-BLOCKUS South Africa 11->40 30 Original Invoice_1...85 Document.exe.log, ASCII 11->30 dropped 66 Injects a PE file into a foreign processes 11->66 16 Original Invoice_12_1421-07-2022085 Document.exe 11->16         started        file6 signatures7 process8 signatures9 42 Modifies the context of a thread in another process (thread injection) 16->42 44 Maps a DLL or memory area into another process 16->44 46 Sample uses process hollowing technique 16->46 48 Queues an APC in another process (thread injection) 16->48 19 explorer.exe 16->19 injected process10 dnsIp11 34 www.it24hr.com 103.224.212.222, 49762, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 19->34 36 www.girftrocket.com 185.53.179.170, 49767, 80 TEAMINTERNET-ASDE Germany 19->36 38 5 other IPs or domains 19->38 58 System process connects to network (likely due to code injection or exploit) 19->58 23 cscript.exe 19->23         started        signatures12 process13 signatures14 60 Modifies the context of a thread in another process (thread injection) 23->60 62 Maps a DLL or memory area into another process 23->62 64 Tries to detect virtualization through RDTSC time measurements 23->64 26 cmd.exe 1 23->26         started        process15 process16 28 conhost.exe 26->28         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/31f21e3ba94e074d03b416decbbb5a69994ccd8137b3e361acf21e298c00befa/
Threat name:
ByteCode-MSIL.Trojan.Leonem
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Status:
Malicious
First seen:
2022-07-21 09:17:27 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
26 of 40 (65.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ghzb4o5jjydu2a5uc3pmxo22ngmuztmbg6z6gynm6ipctdaax35a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:formbook family:xloader loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220721-p724wsfeh9/
Behaviour
Gathers network information
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Xloader payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
31f21e3ba94e074d03b416decbbb5a69994ccd8137b3e361acf21e298c00befa
MD5 hash:
d7b6de9eee0391cdd094952bf72dd483
SHA1 hash:
7e3973363f560d9b9afff330f8085ac906a40f73
Link:
https://www.unpac.me/results/9086cae7-d773-4a24-ab23-01f3a85c39d1/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/31f21e3ba94e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/31f21e3ba94e074d03b416decbbb5a69994ccd8137b3e361acf21e298c00befa

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:pdb_YARAify
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Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 31f21e3ba94e074d03b416decbbb5a69994ccd8137b3e361acf21e298c00befa

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/293182/

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